International envoy to the Middle East Tony Blair emphasized the continued need to move toward a two-state solution in order to maintain the peace in Gaza, in a Sunday interview with the BBC. Blair, a former British prime minister, said that there needed to be "a truly credible process" for establishing the two states, according to dpa. "Even the short-term is fragile and the long-term sustainability of this depends absolutely and intimately on re-vitalizing the whole of the peace process," he told BBC Radio 4's The World This Weekend. "If we simply carry on with a situation in which the politics of Gaza are isolated from the politics of the West Bank and where there isn't that sense of drive towards the creation of a Palestinian state, I'm afraid that fragility will break down," he said. Blair is the representative of the Quartet - Russia, the EU, the US and the UN - to the Arab-Israeli peace process.