Stephen Sommers' summer action flick "G.I. Joe: The Rise of Cobra" is ruling the worldwide box office after scoring $56.2 million domestically and grabbing a decent $44.1 million in ticket sales overseas.

Internationally, the film debuted in 35 territories, taking the top spot in almost half of these markets. "G.I. Joe" follows a unit of soliders tracking down a ruthless weapons manufacturer planning to take over the world.

Former box office champion "Harry Potter and the Half-Blood Prince" dropped to second place this weekend, taking another $22.3 million for a total gross of $541.8 million.

Following in third place with $16.9 million was Pixar's animated adventure "Up," which brought its international cume to $108.8 million. The film is currently playing in 21 markets.

Meanwhile, "Ice Age: Dawn of the Dinosaurs" took home $14 million, reaching a cumulative gross of $578.2 million. Following in fifth place was Michael Mann's "Public Enemies," which brought its total haul to $62.3 million after weekend earnings of $7.5 million.

Source: The Hollywood Reporter