In a statement, Saakashvili denounced President Petro Poroshenko.
But the speed and brutality of the former Georgian president and current Ukrainian opposition leader's arrest and exile may prove damaging to Kiev's reformist image in the West.
"Warsaw-Kiev, Kiev-Warsaw, I have traveled that route many times and will do it again, " Saakashvili said, without offering specifics.
Saakashvili, a former governor of Ukraine's Odessa region, was once an ally of Poroshenko, but then became one of his greatest foes.
But there was no immediate sign of public outcry, unlike in December when police tried to arrest Saakashvili but he escaped custody during street protests. In September, the court found Saakashvili guilty of illegally crossing the Ukrainian border.
Over 2200 Filipinos in Kuwait want to leave: minister
The Philippines and China may sign a bilateral agreement on the deployment of OFWs "within the month or next month", Bello said. Bello yesterday said the deployment ban to that country would be effective immediately and would last until revoked.
Saakashvili was stripped of his Ukrainian citizenship while in the U.S.in mid-2017, rendering him stateless.
"Together with our friends we will organize mass protests in Ukraine and will remove the oligarchs from power in a peaceful way".
According to Saakashvili, the document allows him to live and work in the EU.
Kiev's Western allies may also "raise questions about selective justice" in Ukraine, and the arrest could have a "negative impact" on Poroshenko's image overseas, said Sergiy Solodkyi, deputy director of the Kiev-based New Europe think-tank.
She said that the European Union expected to see respect for the rule of law and Saakashvili's rights.
Mikheil Saakashvili, Georgia's former president, who turned to opposition politics in Ukraine, has been making worldwide headlines over the past months with a string of dramatic scenes of unrest.