Indirect talks between the United States and Iran continue through intermediaries, with disputes centering on Iran's proposed tolling system in the Strait of Hormuz and limits on Tehran's uranium enrichment. Both The Globe and Mail and CBS News report that roughly one-fifth of global oil and liquefied natural gas shipments passed through the strait prior to the February 28 start of the conflict. U.S. officials have rejected Iranian controls over the waterway while noting limited progress in the discussions.