Russian President Vladimir Putin will visit China this week, both countries announced Tuesday, meeting his “dear friend” Xi Jinping as he seeks to win greater support from Beijing for his war effort in Ukraine and isolated economy. It will be Putin’s first trip abroad since his March re-election and his second in just over six months to China, a crucial economic lifeline for Russia after the West hit it with unprecedented sanctions over its military offensive in Ukraine. Beijing has rebuffed Western criticism of its ties with Moscow, hailing their “no limits” partnership as it enjoys cheap Rus…