The international market is very important to the studios these days.
wiki said:Several weeks after release, the film grossed $147 million at the foreign box office, surpassing the lifetime international earnings of its predecessor.[106] Into Darkness reached the top spot of China's box office with a $25.8 million gross, tripling the overall earnings of the previous film during its opening weekend.[107] Star Trek Into Darkness ended its North American theatrical run on September 12, 2013, with a box office total of $228,778,661, which places it as the 11th highest-grossing film for 2013.[108] It earned $467,365,246 worldwide, ranking it in 14th place for 2013, and making it the highest-grossing film of the franchise.[4]