Former British Prime Minister Tony Blair told Congress on Thursday there is no workable alternative to a two-state solution to the conflict between Israel and the Palestinians, and both sides are in favor of it. But in practice, "they doubt it can happen," Blair told the Senate Foreign Relations Committee. "The opportunity is there," said Blair, who is the international negotiator for the Mideast on behalf of the United Nations, the United States, the European Union and Russia. "But it won't remain if not seized. As President Obama has recognized, this is the right time to seize it."