The New York Times reports, "In tightening sanctions on Iran, the Trump administration moved on Monday to isolate Tehran economically and undercut its power across the Middle East. But the clampdown has complicated relations with China at a particularly sensitive moment. The decision to stop five of Iran's biggest customers from buying its oil was an audacious strike at Tehran's lifeline — one million barrels of oil exports daily, fully half of which go to China. The order was also aimed at India, Japan, South Korea and Turkey, all countries that trade robustly with the United States. All are also partners with the United States on major security and diplomatic issues that do not involve Iran. 'We will no longer grant exemptions,' Secretary of State Mike Pompeo said in announcing that current sanctions waivers to the five nations would expire on May 2, clearing the way for American economic penalties against all companies or financial institutions that continue to take part in transactions linked to buying Iranian oil."