The United States and Ukraine are on the verge of signing a mineral deal after months of fraught and chaotic negotiations, although a last-minute snag still needs to be ironed out. Ukraine's prime minister said First Deputy Prime Minister Yulia Svyrydenko was flying to Washington on Wednesday to sign the deal, which is central to Kyiv's efforts to mend ties with President Donald Trump and the White House as the U.S. president tries to secure a peace settlement in Russia's war in Ukraine. ... However, a snag arose as Svyrydenko’s plane headed to Washington, with U.S. officials reportedly demanding that...