(CNN) – Syrian President Bashar al-Assad should heed U.S. warnings to neither use nor move chemical or biological weapons, lest he risk crossing a "red line" and provoke a U.S. military response, President Barack Obama said Monday. "We cannot have a situation where chemical or biological weapons are falling into the hands of the wrong … Continue reading President Obama to Syria: Don't cross 'red line' – Jim Clancy on what this means for ongoing violence in the country