Complete the following sentence: On 30 August 2008, the Libyan leader Muammar al-Gaddafi and Berlusconi signed a historic cooperation treaty in Benghazi. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ •••••••••••••••••••••••••••••••••••••••••••••••• Treaty was ratified by Italy on 6 February 2009, and by Libya on 2 March, during a visit to Tripoli by Berlusconi. In June Gaddafi made his first visit to Rome, where he met Prime Minister Berlusconi, Italian President of the Republic Giorgio Napolitano and Senate's Speaker Renato Schifani. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️
<unk> <unk> <unk> <unk> <unk> During the summit a warm handshake between US President Barack Obama and Muammar Gaddafi took place (the first time the Libyan leader has been greeted by a serving US president), then at the summit's official dinner offered by President Giorgio Napolitano US and Libyan leaders upset the ceremony and sat by the Italian Prime Minister and G8 host, Silvio Berlusconi. During the summit a warm handshake between US President Barack Obama and Muammar Gaddafi took place (the first time the Libyan leader has been greeted by a serving US president), then at the summit's official dinner offered by President Giorgio Napolitano US and Libyan leaders upset the ceremony and sat by the Italian Prime Minister and G8 host, Silvio Berlusconi. ️<unk>️<unk>️<unk>️<unk>️