Brent crude oil futures fell below 107 dollars a barrel, today, after six major powers struck a fresh six-month deal with Iran to curb its nuclear programme. Brent for February delivery fell 59 cents, at 106.66 dollars a barrel. U.S. crude slipped 62 cents, to 92.10 dollas per barrel. Analysts said oil's move lower on the Iran developments was relatively muted because any increase in exports would be slow.