The White House says that it welcomes Turkey's "increased focus and accelerated efforts" against the Islamic State (IS) militant group.
The comments were made on July 26 at a news briefing in Nairobi by a White House official during a visit to Kenya by U.S. President Barack Obama.
The comments came a day after Turkey launched air and artillery strikes against IS positions in Syria and Kurdish militants in northern Iraq.
Ankara did not give details of what the aircraft targeted in the attacks on the IS group in Syria.
But it said the strikes hit shelters and storage facilities belonging to the outlawed Kurdistan Workers Party (PKK).
Turkey's military also shelled IS and PKK positions from across the Turkish border.
Following the strikes, the PKK said its truce with Ankara had lost all meaning.
Late on July 25, suspected Kurdish rebels detonated a car bomb as a Turkish military vehicle was passing by, killing two soldiers and wounding four others in the mainly Kurdish Diyarbakir Province.