combat planes and two helicopters. gadhafi tanks started to shell the city once again. rebels trying to push back but they only have light weapons to work with. a different story to the east to tell you about where libyan rebel have seized control of the key eastern city of ajdabiya. gadhafis forces retreated after days of intense fighting. the libyan foreign ministry says coalition air strikes were the main factor. ajdabiya is the gateway to libya's enormous oil fields and carrying out air strikes in central libya. reuters said attacks are happening in sabha, citing libyan state television and a report says the targets in military and civilian areas. president barack obama is defending american involvement in libya. he faced criticism of those that think he should have consulted congress first and defined the mission better. in his weekly address, the president said that the u.s. should not intervene every time there's a world crisis but this