The White House and State Department saying there will be both short term and long term consequences.
China has repeatedly said that these artificial islands were strictly for tourism purposes until well, they weren't. China has repeatedly said that these outposts were not for military purposes until well, they weren't. First images appeared of runways, then satellites, then military barracks...but still China insisted, not for military purposes. Recently however they have been moving missiles to these "tourist destinations".
This all comes after the Pentagon and Dept. of Defense confirmed today that China has been firing lasers at U.S. pilots over Africa from their lone overseas base in Djibouti. Not good.