jerusalem israeli military say attack hamas train compound gaza monday response rocket strike palestinian enclave surge since u.s. president donald trump recognize jerusalem israel capital dec 6. neither side report casualties overnight shell exchange occur days u.s. vice president mike pence visit israel neighbor egypt also border gaza involve internal politics militants gaza territory control hamas islamist group launch dozen rocket southern israel last two weeks intensive attack since seven-week-long gaza war 2014. two rocket fire late sunday one explode inside israeli border community hit open area military say another rocket launch early monday fell short inside gaza say three structure hamas train camp hit israeli counter-strike military say hamas usually evacuate facilities tensions rise israel choice low-profile target appear signal desire avoid serious confrontation group israel seek escalation justice minister ayelet shake say army radio zeev elkin another member prime minister benjamin netanyahu security cabinet say interview radio station israel military response would harshen rocket fire stop israeli officials blame fire small militant group gaza call hamas rein hamas fail shake elkin say israel could eventually target group leadership attack israel strike hamas target gaza palestinian rocket attack