The judicial authorities in Kuwait have charged 25 Kuwaitis and an Iranian with illicit arms possession and secretive contacts with Iran and its ally Hezbollah, the Shiite Lebanese militant group, Kuwait’s official news agency reported Tuesday. The agency quoted a statement by Dherar al-Asousi, the public prosecutor, as saying all 26 were implicated in what it described as a terrorist plot to destabilize the country. Twenty-three of the defendants have been arrested, the statement said. It did not name any but said all were accused of having illegally obtained “explosives, machine guns, firearms, ammunition and tapping devices.” Kuwait’s Sunni monarchy is a strong ally of Saudi Arabia, which regards Iran as its main regional rival.