KIEV/DONETSK-IZVARINO BORDER CROSSING Russia - The United States demanded Moscow remove an aid convoy it sent into rebel-held eastern Ukraine without permission on Friday, accusing Russia of a flagrant violation of the sovereignty of its former Soviet neighbour and threatening more sanctions. | Video
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FERGUSON Mo. - National Guard troops began leaving Ferguson, Missouri, on Friday in a sign authorities are increasingly confident they have quelled the worst of the violence that erupted after a white police officer fatally shot an unarmed black teenager. | Video
VIENNA - As war rages in Gaza, Arab states will likely try to heighten diplomatic pressure on Israel over its assumed nuclear arsenal at next month's annual meeting of the U.N. nuclear agency's 160 member states, diplomats said on Friday.
* Dollar rise lifts greenback index to 2014 high * Russia convoy enters Ukraine * Yellen urges caution on rates moves (Adds closing New York prices) By Michael Connor NEW YORK, Aug 22 - Wall Street and other stock markets paused on Friday, halting the week's strong gains, as worsening Ukraine tensions dogged trading, while the dollar rose after Federal Reserve Chair Janet Yellen said policymakers eyeing interest rate hikes need to move cautiously. Ukraine on Frida