Pakistan’s foreign minister said on Saturday that the US ambassador had been summoned after President Joe Biden said in a speech that Pakistan is “possibly one of the most dangerous nations in the world” because it possesses “nuclear weapons with no cohesion.”

The minister, Bilawal Bhutto-Zardari said he was surprised by Biden’s comments and a misunderstanding was created by a lack of engagement.

Bhutto-Zardari said he didn’t think the decision to summon the U.S. Ambassador will negatively affect relations with the United States.

Biden made the remarks at a Democratic Congressional Campaign Committee reception on Thursday.