Still image taken from aerial footage released by Russia's Defence Ministry on February 11, 2016, shows airstrikes, carried out by the country's air force and hitting what the Defence Ministry says was Islamic State militants' stronghold, in Latakia, Syria (Reuters)
The US military did not carry out any strikes on Wednesday in or around Aleppo, US Army Colonel Steve Warren, a Baghdad-based spokesman for the US-led coalition fighting IS group, told Reuters on Thursday.
He said any claims to the contrary were a "fabrication".
Russia's Defence Ministry said earlier on Thursday that two US aircraft had bombed the Syrian city of Aleppo on Feb. 10.
At the Pentagon, spokesman Captain Jeff Davis said Russia's claims were "patently false".
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