Crude at $60 a barrel would probably trigger a strong increase in North American oil output, the head of the International Energy Agency said, amid signs that OPEC members and Russia may be edging toward an agreement to limit production. Benchmark Brent crude hit a one-year high above $53 a barrel on Monday when President Vladimir Putin said Russia was willing to work with the Organization of Petroleum Exporting Countries to stabilize the market. A deal could lift prices as high as $60 by the end of this year, Saudi Arabia’s Energy and Industry Minister Khalid Al-Falih said at the World Energy Congress in Istanbul. If prices reach $60 and stay there, U.S. shale drillers could find it commercially viable to revive production at some […]