WRAPUP 13-Kyiv accuses Moscow of 'imperialism' after Russia flags interest in south Ukraine

(Adds quote from Zelenskiy)

* Russian general describes Moscow's aims in new, broader terms

* Ukraine says comments show Russia is seeking occupation

* EU official sees decisive couple of weeks

* UN Secretary-General to visit Moscow next Tuesday

By Pavel Polityuk

KYIV/MARIUPOL, Ukraine, April 22 (Reuters) - Moscow wants to take full control over southern Ukraine, a Russian general said on Friday, a statement Ukraine said gave the lie to Russia's previous assertions that it had no territorial ambitions.

Rustam Minnekayev, deputy commander of Russia's central military district, was quoted by Russian state news agencies as saying full control over southern Ukraine would give it access to Transnistria, a breakaway Russian-occupied part of Moldova in the west.

That would cut off Ukraine's entire coastline and mean Russian forces pushing hundreds of miles west beyond current lines, past the major Ukrainian coastal cities of Mykolaiv and Odesa.

Moscow says it is conducting a "special military operation" to demilitarise Ukraine and liberate its population from dangerous nationalists. Ukraine and its Western allies call Russia's invasion an unjustified war of aggression.

Ukrainian President Volodymyr Zelenskiy said Minnekayev's statement showed Russia's invasion of Ukraine was "intended only as a beginning".

"And then they want to capture other countries," he said. "All the nations that, like us, believe in the victory of life over death must fight with us. They must help us, because we are the first in line. And who will come next?"

On Twitter, Ukraine's defence ministry said Russia had now "acknowledged that the goal of the 'second phase' of the war is not victory over the mythical Nazis, but simply the occupation of eastern and southern Ukraine. Imperialism as it is."

Minnekayev said Russian speakers were oppressed in Transnistria, something Moldova and Western leaders reject.

U.S. State Department spokesperson Jalina Porter declined specific comment on Minnekayev's statement but said Washington firmly supported Moldova's sovereignty and was "clear-eyed" about events on the ground. "No one should be fooled by the Kremlin's announcements," Porter said.

Kremlin spokesman Dmitry Peskov declined to comment when asked if Russia had expanded the goals of its operation and how Moscow saw the political future of southern Ukraine.

In Washington, Secretary of State Antony Blinken met with Ukrainian Prime Minister Denys Shmyhal and the two discussed Ukraine's most pressing needs, a statement said.