Barge in on

barge in (on) (…에) 함부로 참견하다, 끼어들다.

Still, there is evidence that a peaceful insurgency against American hegemony has begun. Obama and his secretary of state, Hillary Clinton, encountered this at the global climate conference last December, when they barged in on a private meeting orchestrated by Chinese officials, who intended to get India, Brazil, and South Africa to block a pact.

Regards,

Jongho Kim