History of Israel exchange for the Lebanese terrorist Samir Kuntar, four Hezbollah prisoners, and the bodies of 199 Palestinian Arab and Lebanese fighters. Olmert came under investigation for corruption and this led him to announce on 30 July 2008, that he would be stepping down as Prime Minister following election of a new leader of the Kadima party in September 2008. Tzipi Livni won the election, but was unable to form a coalition and Olmert remained in office until the general election. Israel carried out Operation Cast Lead in the Gaza Strip from 27 December 2008 to 18 January 2009 in response to
Tzipi Livni Livni and Shaul Mofaz emerged as the main rivals for the leadership. Livni won the Kadima leadership election by a margin of just 431 votes (1%). Palestinian peace negotiators were reportedly pleased with the result. As the new leader of the ruling party, Livni became prime-minister designate. Upon declaring victory, she stated "the national responsibility (bestowed) by the public brings me to approach this job with great reverence." On 21 September 2008, Olmert formally resigned in a letter submitted to president Shimon Peres, and the following day Peres formally asked Livni to form a new government. Livni faced tough negotiations