Reuters: Key ship insurer the China P&I Club will halt indemnity coverage for tankers carrying Iranian oil from July amid tightening Western sanctions against OPEC’s second largest producer, two club officials told Reuters on Thursday.

Reuters: Iran has blocked oil sales to two Greek companies, Hellenic Petroleum and Motor Oil Hellas after they failed to make payment, Iranian state television reported on Thursday.

Wall Street Journal: Japan’s diplomatic dealings with Iran are likely to require an experienced and delicate touch in the current fraught geopolitical climate, with oil prices rising as the U.S. pressures Tehran over its suspected nuclear-arms development.

Reuters: U.S. Treasury Secretary Timothy Geithner said on Wednesday that fallout from the European debt crisis along with fears of Iran and higher oil prices posed the biggest threats to the U.S. economy.

New York Times: Iran secretly ordered its agents operating inside Afghanistan to exploit the anticipated public outrage by trying to instigate violent protests in the capital, Kabul, and across the western part of the country, according to American officials.

New York Times: Iran’s foreign minister raised new doubts on Wednesday about the resumption of international talks over its disputed nuclear program, saying the location may not be Turkey — as previously agreed — and suggested Iraq and China as possible alternate hosts.

Reuters: Petronas’ South African unit Engen said on Wednesday it had halted all imports of crude from Iran after deciding the sanctions placed on the Middle Eastern country were a risk to its security of supply.