ATHENS/SOFIA - Bulgaria has serious doubts about the cargo on board planes that Russia says it will fly into Syria with aid, and has refused them access to its airspace, the foreign ministry in Sofia said on Tuesday.
The United States, deeply concerned by reports of a Russian military build-up in Syria, had earlier asked Greece to deny the same flights access to Greek airspace, an official in Athens said on Monday.
"We have enough information that makes us have serious doubts about the cargo of the planes, which is the reason for the refusal," a Bulgarian foreign ministry spokeswoman said.
The Russian foreign ministry declined immediate comment.
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