Leba**n's leading Sunni politician Saad Hariri returned from self-imposed exile Friday on a trip to bolster the country's army after clashes with jihadists in the latest spillover from Syria's war. Hariri's visit, his first since 2011, comes after open conflict between the army and jihadists on the border with Syria that has killed 17 troops and left 19 kidnapped. Hariri's trip follows his an**uncement that Saudi Arabia, one of his chief allies, would give $1 billion to shore up the army and security forces against jihadists. His return to Leba**n also underscores the seriousness of the clashes in the Arsal region in eastern Leba**n on the Syrian border.