PRESIDENTIAL RACE-DEMOCRATIC DEBATE

LAS VEGAS — Front-runner Hillary Rodham Clinton and her main rival Sen. Bernie Sanders clash over U.S. involvement in the Middle East, gun control and economic policy in the first Democratic presidential debate Tuesday, outlining competing visions for a party seeking to keep the White House for a third straight term.

UNITED STATES-SYRIAN REBELS

WASHINGTON (AP) — The Russian military intervention to prop up Syria's government has brought new scrutiny of the CIA's secret support to Syrian rebels fighting President Bashar Assad. But how far is the U.S. willing to go to empower its proxies to take on Vladimir Putin's allies? 

UNITED STATES-IRAQ

WASHINGTON — After months of preliminary skirmishes and hundreds of U.S. airstrikes, conditions are now right for Iraq to launch a decisive assault on Ramadi and reclaim the provincial capital from Islamic State fighters, a U.S. military official said Tuesday

ISRAEL-PALESTINIANS-KERRY

BOSTON — U.S. Secretary of State John Kerry condemns terrorist attacks against Israeli civilians and said that violence between Israelis and Palestinians "has got to stop." 

UNITED STATES-IRAN-REPORTER

WASHINGTON — The brother of Jason Rezaian, The Washington Post journalist detained in Iran and convicted in secret, describes his brother's imprisonment as "cruel and inhumane" and calls on the U.S. government to take "any appropriate actions" to win his freedom. 

GUATEMALA-MUDSLIDE

GUATEMALA CITY — Guatemalan authorities called off the search for victims buried under a massive landslide that killed at least 280 people near the Central American nation's capital. 

CANADA-EGYPT-AL-JAZEERA JOURNALIST

TORONTO — A Canadian journalist who spent much of the last two years jailed in Egypt says that he felt "betrayed and abandoned" by Prime Minister Stephen Harper during his ordeal. 

CIA INTERROGATION-LAWSUIT

WASHINGTON — The American Civil Liberties Union sues two former Air Force psychologists who designed a CIA program that used harsh interrogation techniques to elicit intelligence from suspected terrorists, saying the pair endorsed and taught torture tactics under the guise of science.