By Steve Holland and Matt Spetalnick
STOCKHOLM (Reuters) - President Barack Obama issued a blunt challenge to skeptical U.S. lawmakers on Wednesday to approve his plan for a military strike on Syria, saying inaction would put America's prestige and their own credibility at risk.
Using a visit to Sweden to build his case for military action, Obama insisted that the world could not remain silent after the "barbarism" of the August 21 chemical weapons attack he blamed on the forces of Syrian President Bashar al-Assad.
"My credibility is not on the line. The international community's credibility is on the line,"...