By Dan Williams and Doina Chiacu WASHINGTON (Reuters) - Israeli Prime Minister Benjamin Netanyahu will escalate his campaign against U.S. President Barack Obama's Iran diplomacy on Tuesday in a speech to Congress whose staging has put unprecedented stress on the two leaders' already strained ties. Although cold-shouldered by the administration, Netanyahu has offered an olive branch, saying he meant no disrespect to Obama by accepting an invitation to address U.S. lawmakers that was orchestrated by the president's rival Republicans. As many as one-fifth of Democratic members plan to sit out the speech to protest what they see as a politicization of Israeli security, an issue on which Congress usually unites. The White House is wary of Netanyahu using the forum to lay bare the closed-door negotiations designed to curb Iran's nuclear drive.
By Libby George LONDON (Reuters) - Oil rebounded by more than $1 to above $60 a barrel on Tuesday as fighting in Libya, stronger equity markets and firm demand helped Brent futures recover from the biggest one-day loss in a month. Brent crude fell almost 5 percent on Monday as traders refocused on rising global supplies, which pushed oil prices down more than 60 percent between June and January. Oilfields and ports are increasingly a target in Libya's conflict, which pits two rival governments and their armed forces against each other, nearly four years after the uprising that ousted leader Muammar Gaddafi. U.S. crude futures , also known as West Texas Intermediate or WTI, were up 75 cents at $50.34 a barrel.