ISLAMABAD—Pakistani Prime Minister Imran Khan announced Monday that his country will import about 2 million tons of wheat from Russia and buy natural gas as well under bilateral agreements the two sides signed last week during his official trip to Moscow. Khan pressed on with his two-day visit and met with President Vladimir Putin at the Kremlin on Thursday, hours after Russian forces invaded Ukraine, with Western countries pushing to isolate the Russian leader for his actions. On Monday, the Pakistani prime minister defended his trip and responded to critics in a televised speech to the nation, saying Pakistan’s economic interests required him to do so. “We went there because we have to import 2 million tons of wheat from Russia. Secondly, we have signed agreements with them to import natural gas because Pakistan’s own gas reserves are depleting,” Khan said. “Inshallah (God willing), the time will tell that we …