Kuwaiti coastguards arrested seven Iraqi sailors on a fishing boat on Sunday, saying they had trespassed into Kuwait\'s northern territorial waters, state-run news agency KUNA said. The sailors had been taken to the Marine Security Department for investigation, KUNA quoted the coastguards\' office as saying in a statement. Diplomatic relations between the neighbouring Gulf states have remained fraught since Saddam Hussein\'s invasion of Kuwait in 1990-1. Ties between the countries appeared to be improving earlier this month when Iraqi Prime Minister Nuri al-Maliki and his Kuwaiti counterpart agreed to resolve a standoff over war-era debts. Iraq has been keen to resolve some of its disputes with Kuwait ahead of a March 27-29 Arab League summit in Baghdad, the first to be held there since before the 1990 invasion.