The bombings in Boston have only strengthened President Obama’s resolve to strengthen international cooperation against terrorism, Secretary of State John Kerry said Friday.

“For this entire week, we’ve been in a direct confrontation with evil,” Kerry said. “President Obama has made this a critical component of his foreign policy, and obviously this just emphasizes that.”

Kerry, a former senator of Massachusetts, made the remarks in a press conference alongside Mexican Foreign Secretary Jose Antonio Meade after their bilateral meeting at the State Department. Kerry said cross-border security was a topic of discussion following reports that the two suspects in the attack were Chechen immigrants.