{
  "id": 165,
  "subject_type": "incident",
  "subject_id": 42,
  "field": "occurred_on",
  "value": "Invasion date",
  "statement": "The Soviet Union led Warsaw Pact troops into an invasion of Czechoslovakia on August 20, 1968 to reverse the Prague Spring's reforms in Prague.",
  "attribution": null,
  "source_id": 177,
  "evidence_quote": "On August 20, 1968, the Soviet Union led Warsaw Pact troops in an invasion of Czechoslovakia to crack down on reformist trends in Prague.",
  "evidence_date": null,
  "method": "primary_document",
  "verified_at": "2026-09-22",
  "confidence": "medium",
  "status": "current",
  "supersedes_id": null,
  "superseded_by": null,
  "supersede_reason": null,
  "batch_label": "v2-research-2026-09-22",
  "created_at": "2026-09-22T23:06:03Z",
  "url": "https://thewaronnews.com/claims/165",
  "subject_url": "https://thewaronnews.com/incidents/1968-czechoslovakia-normalization-censorship",
  "source": {
    "id": 177,
    "url": "https://history.state.gov/milestones/1961-1968/soviet-invasion-czechoslavkia",
    "final_url": "https://history.state.gov/milestones/1961-1968/soviet-invasion-czechoslavkia",
    "title": "Soviet Invasion of Czechoslovakia, 1968",
    "publisher": "Office of the Historian, United States Department of State",
    "published_on": null,
    "link_state": "live",
    "link_state_since": "2026-09-22T23:23:23Z",
    "wayback_url": null,
    "wayback_saved_at": null
  },
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/"
  }
}