Hamas has appointed Yahya Sinwar as its new political leader following the assassination of Ismail Haniyeh in Tehran, with Sinwar being identified as a key architect behind the deadly October 7 attacks that killed over 1,200 Israelis. Sinwar, who has led Hamas in Gaza since 2017, is considered a significant figure in the group's operations and is believed to be hiding in tunnels beneath Gaza to evade Israeli forces. His appointment has heightened tensions, with Israeli officials vowing to eliminate him as a primary target. Hezbollah has shown support for Sinwar's leadership, asserting that the assassination of Hamas leaders does not weaken the group's resolve. US officials stated that Israel will need to engage with Sinwar in any future negotiations regarding Hamas. This leadership change comes amid ongoing ceasefire discussions and mounting regional tensions.