RT by @timourazhari: HOUSTON, July 20 (Reuters) - Oil prices settled over 1% higher on Monday after volatile trading through the session, as traders weighed hopes of renewed U.S.-I

HOUSTON, July 20 (Reuters) - Oil prices settled over 1% higher on Monday after volatile trading through the session, as traders weighed hopes of renewed U.S.-Iran negotiations against Yemen's Houthis imposition of a naval blockade against Saudi Arabia.