President Donald Trump has said he is working on a “massive” deal to buy fertiliser from Belarus, pivoting away from main supplier Canada amid an escalating trade dispute, and moving instead toward an ally of Russia. “The United States is working on a massive deal with respect to the purchase of Potash from Belarus,” Trump said on his Truth Social network. “The pricing would be for substantially less than we are currently paying to Canada, very good news for our farmers and ranchers.” In recent weeks Trump has stepped up his trade war with Canada, a long-term US ally and...