The BBC's Theo Leggett explains that the two switches were moved which caused the crash
It comes after US President Donald Trump announced a new deal to supply air defence systems via Nato.
At least 120 were killed when flash flooding devastated areas in central Texas last week.
Nasser hospital in Khan Younis has a critical shortage of fuel and had to stop admitting patients after Israeli tanks advanced nearby on Thursday.
The US has insisted that Iran's nuclear facilities were completely 'obliterated' during strikes in June.
At least 27 people have been admitted to hospital, some of whom are in a critical condition.
The court says there are "reasonable grounds" to believe claims of war crimes in western Sudan.
The ceremony took place under tight security at a cave in Iraqi Kurdistan - the disarmament process is expected to last all summer.
Nigeria cannot accept Venezuelans because "we already have over 230 million people," says the foreign minister.
Trump has threatened blanket levies of 15% or 20% on most trade partners, and says he will soon announce new tariffs on the EU.
