Rockets in the skies above Homs. Just one of several (rockets) rebel fighters launched at government targets over the weekend - in this latest video posted to a social media website whose content Reuters cannot independently verify.<br/> <br />Frustration is close to the surface.<br/> <br />SOUNDBITE: Unidentified rebel fighter saying (Arabic):<br/> <br />"For more than two and a half years, our children were being killed. We were being killed. The whole world is watching our death. Every day, there's a news excuse. First they wanted us to form a National Council, next they wanted a national coalition, then ministers. We aren't getting support from anyone on this planet."<br/> <br />The rebel attack took place as Secretary of State John Kerry promised to double the U.S.'s non-lethal aid to opposition forces to $250 million. Rebels have made little effort to hide their disappointment with the west's refusal to supply them with arms.<br/> <br />They are battling the military on several key fronts inclu
