Three Russian-Israeli dual nationals remain in Hamas captivity in Gaza as Moscow attempts to secure their release, Israel’s Ambassador to Russia Simona Halperinsaid Wednesday. Hamas-led militants launched a surprise attack against Israel on Oct. 7, killing some 1,200 people and taking around 250 others hostage. Israel responded with a devastating offensive on the Gaza Strip, which has so far claimed the lives of more than 32,900 Palestinians, according to the Gaza Health Ministry. Around 120 hostages were freed during a short-lived ceasefire in November, and Israel believes 134 people remain i…