Greece and its international lenders must speed up talks to reach a deal before an end-June deadline to avoid doubts and speculation about Greece's future in the euro zone, French President Francois Hollande said after a G7 meeting. "There is an end-June deadline," Hollande told a news conference, referring to the end of a bailout programme for Greece and repayment deadlines to the IMF. "This is the latest possible deadline but nothing stops us from going faster and I think it is in Greece's interest to go faster to avoid doubts or speculation.