President Vladimir Putin will on Friday begin formally annexing 15 per cent of Ukrainian territory, presiding at a Kremlin signing ceremony to add four Ukrainian regions to Russia.
Kremlin spokesman Dmitry Peskov said the ceremony would take place at 1500 Moscow time (1200 GMT) on Friday "on agreements on the accession of new territories into the Russian Federation".
Agreements will be signed "with all four territories that held referendums and made corresponding requests to the Russian side," Peskov said.
Ukraine and the West have rejected the hastily arranged votes, held seven months after Russia's invasion, as illegitimate shams.
Putin's decision to incorporate the regions into Russia means Moscow will annex vast areas across eastern and southern Ukraine, representing around 15% of Ukraine's total territory.
Following the signing ceremonies in the Kremlin, Putin will give a major speech and will meet with Moscow-appointed administrators of the Ukrainian regions, the Kremlin said.
North Korea fired a short-range ballistic missile on Thursday towards the sea off the peninsula's eastern coast, South Korea's military said, the first such launch in more than 40 days after a series of weapons tests earlier this year.
A wildfire prompted an evacuation alert on Wednesday about 30 km (18.64 miles) from Vancouver, one of Canada's largest metropolitan areas, as blazes in Western Canada continued to spread due to dry and hot weather.
Israel said two of its soldiers were killed in southern Lebanon on Wednesday while Lebanese authorities said Israeli retaliatory attacks killed at least one person, a flare-up in violence that coincided with the latest round of talks between the two countries.
Italy took the unprecedented step of placing all its major cities on the highest level of health alert due to high temperatures on Thursday while Hungary turned off the lights at some of its best-known buildings to save energy as a heatwave maintained its grip on large parts of Europe.
Rescuers worked on Thursday to douse fires and clear debris in Ukraine's eastern city of Balakliia after Russian strikes on homes killed three overnight, authorities said on the Telegram messaging app.