LONDON- Iran has told OPEC that it opposes delaying the oil producer group's next meeting, setting the scene for another fight with fellow members as US sanctions put Tehran under unprecedented economic pressure with its oil exports down to just a trickle. Iranian Oil Minister Bijan Zanganeh, in a letter seen by Reuters, said he disagreed with an OPEC proposal to reschedule the meeting to early July. The talks are currently set to take place on June 25-26. In a separate letter, the Organization of the Petroleum Exporting Countries said Algeria and Kazakhstan also disagreed with moving the d...