{"_meta":{"attribution":"Data aggregated by pdata.world (https://pdata.world) from 8 prediction-market venues; CC BY 4.0; source data © each venue.","canonical_url":"https://pdata.world/events/polymarket/17549","as_of":"2026-10-24T09:19:17.344039Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"NATO/EU troops fighting in Ukraine by...?\" — 3 markets; highest \"December 31, 2026\" at 3% as of 2026-10-24 UTC. https://pdata.world/events/polymarket/17549","source_url":"https://polymarket.com/event/natoeu-troops-fighting-in-ukraine-in-2025"},"source":"polymarket","id":"17549","ticker":"natoeu-troops-fighting-in-ukraine-in-2025","slug":"natoeu-troops-fighting-in-ukraine-in-2025","title":"NATO/EU troops fighting in Ukraine by...?","description":"This market will resolve to \"Yes\" if active military personnel officially affiliated with any NATO or EU country enter Ukraine for combat-related military purposes directly pertaining to the ongoing conflict with Russia by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to \"No\".\n\nFor military personnel to qualify toward a \"Yes\" resolution, they must be 1) officially acknowledged as active military by the NATO or EU entity or member state they are affiliated with; 2) be publicly acknowledged by NATO or an EU-affiliated entity to have entered Ukraine for a combat-related military purpose directly pertaining to the ongoing conflict with Russia.\n\nFor military personnel to qualify toward a \"Yes\" resolution they need be active duty and acknowledged as described above. Participation in a combat role is necessary for this market to resolve to \"Yes\" (e.g. military personnel providing training or intelligence support would not qualify toward a \"Yes\" resolution, however drone pilots or infantry directly attacking Russian troops, or soldiers targeting and downing missiles from Ukrainian soil would qualify toward a \"Yes\" resolution).\n\nThe primary resolution source for this market will be official information from NATO, the EU, or member states of either entity, however a consensus of credible reporting will also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","active":true,"closed":false,"start_date":"2025-01-31T23:41:04.062553Z","end_date":"2027-01-01T04:59:00Z","closed_time":null,"volume":487823.63667800004,"volume_24hr":15.0,"volume_24h_change":null,"normalized_vol_24hr":3.1832940578460693,"normalized_volume":38.96136474609375,"liquidity":20732.94679,"open_interest":4017.891402,"categories":["Politics","World"],"tags":[{"id":"96","slug":"ukraine","label":"Ukraine"},{"id":"2","slug":"politics","label":"Politics"},{"id":"100265","slug":"geopolitics","label":"Geopolitics"},{"id":"95","slug":"russia","label":"Russia"},{"id":"192","slug":"nato","label":"NATO"},{"id":"1476","slug":"eu","label":"eu"},{"id":"101970","slug":"world","label":"World"},{"id":"102498","slug":"trump-zelenskyy","label":"Trump-Zelenskyy"},{"id":"102505","slug":"security-guarantee","label":"Security Guarantee"}],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"December 31, 2026","top_outcome_probability":0.0305,"top_outcome_prob_24h_change":-0.0085,"top_outcome_volume_24h_change":15.0,"updated_at":"2026-10-24T08:01:55.369565Z","fetched_at":"2026-10-24T08:01:55.369565Z","added_at":null,"url":"https://polymarket.com/event/natoeu-troops-fighting-in-ukraine-in-2025","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,10.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0,15.0],"kind":"live","mutually_exclusive":false,"markets_total":3,"markets":[{"source":"polymarket","id":"2749382","event_id":"17549","slug":"natoeu-troops-fighting-in-ukraine-by-december-31-2026","question":"NATO/EU troops fighting in Ukraine by December 31, 2026?","group_item_title":"December 31, 2026","description":"This market will resolve to \"Yes\" if active military personnel officially affiliated with any NATO or EU country enter Ukraine for combat-related military purposes directly pertaining to the ongoing conflict with Russia by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to \"No\".\n\nFor military personnel to qualify toward a \"Yes\" resolution, they must be 1) officially acknowledged as active military by the NATO or EU entity or member state they are affiliated with; 2) be publicly acknowledged by NATO or an EU-affiliated entity to have entered Ukraine for a combat-related military purpose directly pertaining to the ongoing conflict with Russia.\n\nFor military personnel to qualify toward a \"Yes\" resolution they need be active duty and acknowledged as described above. Participation in a combat role is necessary for this market to resolve to \"Yes\" (e.g. military personnel providing training or intelligence support would not qualify toward a \"Yes\" resolution, however drone pilots or infantry directly attacking Russian troops, or soldiers targeting and downing missiles from Ukrainian soil would qualify toward a \"Yes\" resolution).\n\nThe primary resolution source for this market will be official information from NATO, the EU, or member states of either entity, however a consensus of credible reporting will also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","outcomes":["Yes","No"],"outcome_prices":[0.0305,0.9695],"probability":0.0305,"spread":0.001,"active":true,"closed":false,"start_date":"2026-06-30T23:41:36.279645Z","end_date":"2027-01-01T04:59:00Z","closed_time":null,"result":null,"volume":159278.98171099997,"volume_24hr":15.0,"prob_24h_change":-0.0085,"volume_24h_change":15.0,"normalized_vol_24hr":3.2927896976470947,"normalized_volume":42.096614837646484,"liquidity":20414.00686,"categories":["Politics","World"],"countries":["Ukraine","Russia"],"updated_at":"2026-10-23T22:46:01.611158Z","fetched_at":"2026-10-23T22:46:01.611158Z","added_at":"2026-06-30T23:56:53.815816Z","url":"https://polymarket.com/event/natoeu-troops-fighting-in-ukraine-in-2025/natoeu-troops-fighting-in-ukraine-by-december-31-2026","event_title":"NATO/EU troops fighting in Ukraine by...?","chart_24h":[0.039,0.039,0.0305]},{"source":"polymarket","id":"521103","event_id":"17549","slug":"natoeu-troops-fighting-in-ukraine-in-2025","question":"NATO/EU troops fighting in Ukraine in 2025?","group_item_title":"December 31, 2025","description":"This market will resolve to \"Yes\" if active military personnel officially affiliated with any NATO or EU country enter Ukraine for combat-related military purposes directly pertaining to the ongoing conflict with Russia by December 31, 2025, 11:59 PM ET. Otherwise, this market will resolve to \"No\".\n\nFor military personnel to qualify toward a \"Yes\" resolution, they must be 1) officially acknowledged as active military by the NATO or EU entity or member state they are affiliated with; 2) be publicly acknowledged by NATO or an EU-affiliated entity to have entered Ukraine for a combat-related military purpose directly pertaining to the ongoing conflict with Russia.\n\nFor military personnel to qualify toward a \"Yes\" resolution they need be active duty and acknowledged as described above. Participation in a combat role is necessary for this market to resolve to \"Yes\" (e.g. military personnel providing training or intelligence support would not qualify toward a \"Yes\" resolution, however drone pilots or infantry directly attacking Russian troops, or soldiers targeting and downing missiles from Ukrainian soil would qualify toward a \"Yes\" resolution).\n\nThe primary resolution source for this market will be official information from NATO, the EU, or member states of either entity, however a consensus of credible reporting will also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","outcomes":["Yes","No"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2025-01-31T23:40:06.781000Z","end_date":"2025-12-31T12:00:00Z","closed_time":"2026-01-01T09:34:35Z","result":"no","volume":170793.703881,"volume_24hr":0.0,"prob_24h_change":null,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":42.58864212036133,"liquidity":0.0,"categories":["Politics","World"],"countries":[],"updated_at":"2026-05-05T13:27:30.159207Z","fetched_at":"2026-05-05T13:27:30.159207Z","added_at":null,"url":"https://polymarket.com/event/natoeu-troops-fighting-in-ukraine-in-2025/natoeu-troops-fighting-in-ukraine-in-2025","event_title":"NATO/EU troops fighting in Ukraine by...?","chart_24h":null},{"source":"polymarket","id":"610236","event_id":"17549","slug":"natoeu-troops-fighting-in-ukraine-in-june-30-2026","question":"NATO/EU troops fighting in Ukraine in June 30, 2026?","group_item_title":"June 30, 2026","description":"This market will resolve to \"Yes\" if active military personnel officially affiliated with any NATO or EU country enter Ukraine for combat-related military purposes directly pertaining to the ongoing conflict with Russia by June 30, 2026, 11:59 PM ET. Otherwise, this market will resolve to \"No\".\n\nFor military personnel to qualify toward a \"Yes\" resolution, they must be 1) officially acknowledged as active military by the NATO or EU entity or member state they are affiliated with; 2) be publicly acknowledged by NATO or an EU-affiliated entity to have entered Ukraine for a combat-related military purpose directly pertaining to the ongoing conflict with Russia.\n\nFor military personnel to qualify toward a \"Yes\" resolution they need be active duty and acknowledged as described above. Participation in a combat role is necessary for this market to resolve to \"Yes\" (e.g. military personnel providing training or intelligence support would not qualify toward a \"Yes\" resolution, however drone pilots or infantry directly attacking Russian troops, or soldiers targeting and downing missiles from Ukrainian soil would qualify toward a \"Yes\" resolution).\n\nThe primary resolution source for this market will be official information from NATO, the EU, or member states of either entity, however a consensus of credible reporting will also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/natoeu-troops-fighting-in-ukraine-in-2025-ed2fIguRcJLj.jpg","outcomes":["Yes","No"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2025-09-23T21:16:41.959938Z","end_date":"2025-12-31T12:00:00Z","closed_time":"2026-07-01T06:02:13Z","result":"no","volume":157750.95108600007,"volume_24hr":0.0,"prob_24h_change":null,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":42.02888870239258,"liquidity":0.0,"categories":["Politics","World"],"countries":["Ukraine"],"updated_at":"2026-07-02T06:05:58.619492Z","fetched_at":"2026-07-01T10:21:28.834489Z","added_at":null,"url":"https://polymarket.com/event/natoeu-troops-fighting-in-ukraine-in-2025/natoeu-troops-fighting-in-ukraine-in-june-30-2026","event_title":"NATO/EU troops fighting in Ukraine by...?","chart_24h":null}]}