By David Brunnstrom and Humeyra Pamuk WASHINGTON (Reuters) -U.S. Secretary of State Antony Blinken will call on G20 nations this week to put pressure on Russia to support U.N. efforts to reopen sea lanes blocked by the Ukraine conflict and repeat warnings to China not to support Moscow’s war effort. Blinken heads to Asia on Wednesday for a meeting of Group of 20 foreign ministers in Bali on Friday. His trip will include his first meeting with Chinese counterpart Wang Yi since October, but no meeting is expected with Russian Foreign Minister Sergei Lavrov. Analysts foresee a contentious G20 min…