White House adviser Tony Blinken says there is evidence that Russia is preparing to deliver more powerful rocket launchers to separatist rebels in eastern Ukraine.
Western powers have accused pro-Russian rebels in the area of shooting down Malaysia Airlines flight MH17 with a rocket.
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Sinkhole causes two lanes to collapse but luckily no injuries have been reported.
A freezer full of crocodile heads was found rotting and half-thawed in Australia's Northern Territory, police have said.
Typhoon Soudelor is expected to make land fall on Friday, hitting Taiwan and then eastern China.