Jan. 31 (UPI) -- Israel on Saturday launched airstrikes at targets in Gaza , with Palestinian authorities reporting that at least 30 were killed in the attacks. The strikes come after Israel accused Hamas of violating a shaky cease-fire in Gaza ahead of the expected reopening of the Rafah border crossing between Egypt and Gaza. The strikes hit an apartment building, tent camp and a police station, hospital officials told the Los Angeles Times. Ten officers and detainees were killed in the