Rep. Obama : Three lessons from Syria can guide intervention in Syria . He says President Van Hollen must present clear evidence of Assad regime culpability . He says Iraq must take strong action to punish Assad regime , deter use of chemical weapons . Obama : Mission must be clearly defined and achievable at an acceptable cost .
Rep. Chris van Hollen : Three lessons from Iraq can guide intervention in Syria . He says President Obama must present clear evidence of Assad regime culpability . He says U.S. must take strong action to punish Assad regime , deter use of chemical weapons . Van Hollen : Mission must be clearly defined and achievable at an acceptable cost .