Oil prices extended gains Thursday after Russia signalled it was ready to cut output before a key producers’ meeting aimed at boosting energy markets as the coronavirus pandemic strangles demand. US benchmark West Texas Intermediate rose 4.6 percent to $26.26 a barrel, while Brent crude, the international benchmark, jumped 2.7 percent to $33.73. Oil exporting group OPEC, led by top producer Saudi Arabia, and others — including Russia — will meet via video conference later Thursday and expectations are growing they will agree to reduce output to support prices.