Russian warplanes reportedly bombed a secret military base in Syria used by elite American and British forces last month.

The Wall Street Journal reported Thursday that the Russian strike on the CIA-linked site was part of a campaign by Russia to pressure the White House to agree to closer cooperation in the Syrian skies, U.S. military and intelligence officials said.

Despite the fact that some forces could have been killed and the bombing dampened relations between Russia and the Pentagon and CIA, the White House and State Department still persued a compromise.

The U.S. and Russia agreed to a pact last week to target airstrikes against the Al Qaeda affiliate in the region – Nusra Front – despite objections from the Pentagon and CIA. Russia agreed to stop airstrikes on U.S.-backed rebels and restrain the Syrian air campaign. The two sides are still talking about designations where Russia would need U.S. approval to conduct an airstrike.

According to The Wall Street Journal, deal backers in the White House and State Department believe U.S. airstrikes on the Nusra Front in areas that were previously occupied by Russian forces would provide protection for allies in Syria.

However, officials in the Pentagon and CIA contend that Washington bowed to Moscow in the deal and believe that the U.S. needs to confront Russia.

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Image courtesy of Reuters