President-elect Donald Trump plans to launch a mass deportation operation targeting millions of immigrants living in the U.S. illegally and with temporary protections once he takes office on Jan. 20, a challenging initiative that could split apart families and affect U.S. businesses.

Kyiv on Saturday staged a major drone attack on the Russian city of Kazan, 1,000 kilometres (620 miles) from the frontier, the latest in a series of escalating aerial attacks in the nearly three-year conflict.

Activity at three airports was restricted Saturday after eight Ukrainian drones struck deep inside Russia in the city of Kazan, the Russian authorities said.

Ukrainian drones attacked the Russian city of Kazan and the airport there was temporarily closed, Russian media and aviation authorities said on Saturday.

Russian President Vladimir Putin on Sunday vowed to bring more “destruction” to Ukraine in retaliation for a drone attack on the central Russian city of Kazan a day earlier. Russia accused Ukraine of a “massive” drone attack that hit a luxury apartment block in the city, some 1,000 kilometres (620 miles) from the frontier.

A video posted on local Telegram news channel Astra, verified by The Associated Press, shows a drone flying into the upper floors of a high-rise building.

Regardless of who attempts to destroy something with us, they must be prepared for significantly greater destruction on their own soil – and they will deeply regret it, - threatened the Russian leader,

Putin’s forces capture Donetsk village as eight wounded in drone attack - Putin says he is open to talks with Donald Trump, saying ‘we will have things to discuss’