Syrian state television is reporting that there was "news of casualties among civilians and big material damage in the two places" and does not mention a military target in today's car bomb attacks in Deraa.
State TV reports say that the two car bombs, which activists claim killed dozens of Syrian soldiers in a military camp, went off at separate locations in the city and gave no further details.
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A top temperature today of 13 Celsius (55F).
Mr Trump tweeted that Mr McMaster has done "an outstanding job & will always remain my friend." He said MrBolton will take over on April 9.
The committee wants a more stringent interpretation of air quality laws and for noise estimates to reflect a range of possible flight paths.