Blinken met Ukrainian Foreign Minister Dmytro Kuleba in Kiev.
His visit comes as Ukraine launches counter-offensives aimed at recapturing Russian-held areas in the south and northeast of the country. This coincided with a meeting of the Ukraine Defense Liaison Group hosted by US Defense Secretary Lloyd Austin at Ramstein Air Base in Germany.
Both Austin and Blinken visited Ukraine in late April. They are the highest-ranking US officials to visit the country since the war began in late February. Several heads of state have traveled to Ukraine to meet Ukrainian President Volodymyr Zelensky. Although the two leaders have spoken by phone in recent weeks, US President Joe Biden has yet to visit.
According to the State Department, Blinken briefly visited Ukraine when they met at the border in Kuleba in March.
The Biden administration has pledged continued support to Ukraine, and has committed more than $13 billion in security aid since the conflict began. Austin announced the new $675 million installment on Thursday. Additionally, Blinken is expected to announce on Thursday that the United States intends to provide $2 billion to boost security in Ukraine and 18 other regional countries.
This story is breaking and will be updated.