Four men have been found guilty of trying to murder Rwanda’s former army chief, Gen Faustin Kayumba Nyamwasa, in South Africa in June 2010.
Another two suspects, including the alleged ringleader and the general’s former driver, were acquitted.
The magistrate said the shooting of Gen Nyamwasa was politically motivated.
The general had gone to live in exile in South Africa several months earlier after falling out with his former ally, Rwandan President Paul Kagame.
Rwanda has denied involvement in the shooting.
The sentences will handed down on 10 September.
The UK’s terror threat level has been raised from «substantial» to «severe» in response to conflicts in Iraq and Syria, Home Secretary Theresa May says.
The new alert level rates the risk of an attack on the UK «highly likely», although Mrs May said there was no evidence to suggest one was «imminent».
It is the second highest of five possible UK threat levels.
PM David Cameron said new legislation would make it easier to take passports from those travelling abroad to fight.
The home secretary already has the power, under the Royal Prerogative, to withhold a passport if it is in the public interest to stop somebody travelling.
That power was used 14 times between April 2013 and the end of March 2014 to stop people travelling abroad for alleged terrorist-related or criminal activity.
Nigeria’s army has committed atrocities in the north-east in its fight against Islamist militants belonging to Boko Haram, Amnesty International says.
The campaign group said it had seen «gruesome footage» including alleged members of the military slitting the throats of detainees.
The Nigerian authorities said such barbarity had no place in the military and promised to investigate. Boko Haram has been waging an insurgency in Nigeria since 2009.
Thousands of people have been killed in a series of bombings and assassinations in the north-east and in the capital, Abuja, this year alone.
The security environment around Japan has become «increasingly severe» amid tensions with China and concern over North Korea, the Japanese defence ministry’s annual white paper says.
The paper was adopted by PM Shinzo Abe at a cabinet meeting on Tuesday.
It described China’s declaration of an air defence identification zone over disputed East China Sea islands as a «profoundly dangerous act».
China’s actions, it warned, could result in «unintended consequences».
China and Japan are locked in a bitter dispute over an island chain called Senkaku in Japan and Diaoyu in China. Japan controls the islands.
Since the row escalated, Chinese ships and planes have been moving in and out of what Japan says is its territory, leading to fears of a clash.
More than 100 people remain missing a day after a ferry capsized near the Bangladeshi capital, Dhaka.
Rescuers have still not located the vessel, which sank in Munshiganj district, 30km (20 miles) from Dhaka.
Navy teams are using sonar to try to find the boat, which was carrying people returning from Eid celebrations.
Accidents are common on Bangladesh’s river network and scores of people are killed every year, with overcrowding and poor boat quality often to blame.
Emergency teams rescued about 100 people from the ferry, the Pinak-6, on Monday.