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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Straight-A student Andrew Jones was barred from giving a speech at his graduation because of his school's policy forbidding facial hair.
Taxpayers forced to hang onto the phone while calling HMRC lost the equivalent of £97 million last year, a watchdog has found.
Union members will hold rallies across the UK as part of the strike action over a rejected 1.1% pay offer.