says was being used by the group. russia, france and the u.s. have been hitting the city of raqqah. the uptick in air strikes comes as many are calling for the united states to strengthen its military strategy against isis. nick paton walsh is joining us now. he's inside syria. from your vantage point, you're on the scene there, what are you seeing? >> well, has clearly been a substantial uptick as you mentioned over raqqah and that persists until tonight. in the last hours, activists in raqqah again reporting air strikes in their city as there were during the day. we don't know the total numbers at this stage. we know last night was the first time they said an attack on a fuel truck, seven people were killed. different people are actually saying that was in fact six. that is the first civilian casualties we're hearing. at the same time, we don't know