Rep. West: US should be cautious before arming Syrian rebels

Sens. John McCainJohn Sidney McCainMcCain rips Trump for attacks on press NSA spying program overcomes key Senate hurdle Meghan McCain says her father regrets opposition to MLK Day MORE (R-Ariz.), Lindsey GrahamLindsey Olin GrahamDHS chief takes heat over Trump furor Overnight Defense: GOP chair blames Dems for defense budget holdup | FDA, Pentagon to speed approval of battlefield drugs | Mattis calls North Korea situation 'sobering' Bipartisan group to introduce DACA bill in House MORE (R-S.C.) and Joe Lieberman (I-Conn.) have said that the U.S. should consider arming the Syrian opposition to help oust the Assad regime, which has killed thousands during the uprising, according to United Nations estimates.

Carney said Tuesday that President Obama is not considering arming the Assad's opponents yet, and that the U.S. is looking at what steps it can take in concert with allies to further pressure the Syrian strongman.

Obama administration officials have blasted Russia and China after they vetoed a UN Security Council resolution this weekend that would have laid the groundwork for Assad to relinquish power.

White House press secretary Jay Carney has said that Russia and China are making a “losing bet” on Assad and that “there will be a transition” in Syria.