Hezbollah says it will escalate war with Israel after Hamas leader killed ReutersHizbollah warns of escalation in Israel conflict after Yahya Sinwar killing Financial TimesHezbollah vows escalation after Sinwar’s death, Iran says ‘resistance will endure’ The Times of IsraelHamas’s Sinwar assassinated by IDF, Hezbollah calls for escalation The Jerusalem PostU.S. Defense Chief: Sinwar’s Death Provides Opportunity to End ‘Terrible War’ in Gaza; Hezbollah Vows Escalation Haaretz