LONDON — The United States and Russia failed on Friday to resolve a Cold-War-style crisis sparked by Moscow’s military intervention in Crimea and the Ukrainian peninsula’s weekend referendum on joining Kremlin rule.

US Secretary of State John Kerry met Russian Foreign Minister Sergey Lavrov in London with few hopes that Sunday’s Moscow-backed referendum in the strategic Black Sea peninsula could be averted or delayed.

But US officials said they still hoped Moscow would avoid taking the extra step of actually annexing the region of two million mostly Russian speakers in a move that would escalate the biggest East-West showdown since the 1989 fall of the Berlin Wall.

Lavrov however told reporters after six hours of talks with Kerry at the lavish US ambassador’s residence in central London that Russia and the West were still far apart on Ukraine.

“We have no common vision of the situation,” said Lavrov. “Differences remain.”

Lavrov also said that Moscow “has no, and cannot have, any plans to invade the southeast region of Ukraine” where Russian speakers mostly reside.

But he hinted of Moscow’s resolve to put Crimea under its eventual control.

“Everyone understands — and I say this with all responsibility — what Crimea means to Russia, and that it means immeasurably more than the Comoros (archipelago) for France or the Falklands for Britain.”

The Kremlin simultaneously issued a statement saying that President Vladimir Putin had told UN Secretary General Ban Ki-moon that Crimea’s decision to conduct the referendum was “in full accordance with the norms of international law and the UN Charter”.

Kerry characterised his talks with Lavrov as “very direct, very frank”.

“Neither we nor the international community will recognize the results of this referendum,” he said, adding that if it takes place, “there will be some sanctions, there will be some response.”

Kerry said that President Barack Obama has already “made it clear that there will be consequences” if Russia failed to take immediate steps to resolve the flaring crisis on the EU’s eastern frontier.

“We would like to see actions and not words that (Russia) is diminishing its presence in Ukraine,” the top US diplomat said.

‘Very serious’ response

The self-declared pro-Kremlin head of Crimea who initially called the controversial referendum had earlier given Western negotiators some hope by indicating he did not expect Russia to annex his region right away.

“It would take a maximum of one year,” Sergiy Aksyonov told reporters in the Crimean capital of Simferopol.

Kerry said only that he did not expect Putin to make a decision on Crimea until after the referendum.

Ukraine meanwhile remained a tinderbox as more than 8,000 Russian troops staged drills near its eastern border while NATO and US reconnaissance aircraft and fighters patrolled the skies of the ex-Soviet state’s EU neighbours to the west.

Kerry has warned Russia that Washington and Europe could announce a “very serious” response as early as Monday if Moscow does not pull back the troops who seized control of Crimea days after the pro-Kremlin regime fell in Kiev last month.

Yet Russia still refuses to recognise the legitimacy of the Western-leaning team that has taken power in Kiev — a move that threatens to shatter Putin’s dream of rebuilding a Soviet-type empire.

Deadly violence returned this week to Ukraine for the first time since nearly 90 people were killed in a week of carnage before the fall of the pro-Moscow regime as a pro-Kiev protester was stabbed to death in the mostly Russian-speaking city of Donetsk.

The local health service said a 22-year-old man died and 16 people were wounded in unrest that erupted when pro-Kiev demonstrators were attacked by pro-Moscow protesters.

Ukraine’s acting President Oleksandr Turchynov blamed the death on separatists “sent in” from Russia.

“These people and the Kremlin do not care about the lives of those they claim to be protecting,” Turchynov said in a statement.

Sunday’s vote gives residents of Crimea — a rugged region that has housed tsarist and Kremlin navies since the 18th century — only two choices: joining Russia or “the significant strengthening of their autonomy within Ukraine”.

The peninsula’s self-declared leaders have already predicted an easy victory and the region is largely expected to vote in favour of joining Russia despite discontent from the Muslim Tatar minority that makes up 12 percent of Crimea’s total population of two million.

Around 500 Crimean Tatars took to the streets of their main settlement on the region after prayers on Islam’s holy day to protest against the “illegal” referendum and call for its boycott.

The protesters waved Ukrainian flags and chanted “Go away Putin” and “Russian soldiers go home” while several trucks carrying pro-Kremlin forces stood on the main road nearby without intervening.

Tatar community leader Mustafa Dzhemilev told AFP on Thursday that NATO should intervene in Crimea to avert a “massacre” of his people by the Russians.

But Washington and its European allies are far more likely to stiffen sanctions against top Russians should the Kremlin fail to scale down its military involvement in Crimea and open direct dialogue with Kiev.

- Russian travel bans -

The European Union will debate travel bans and asset freezes on Monday against Russian officials held responsible for threatening Ukraine’s territorial integrity.

The White House has been moving toward punitive measures faster than its European allies — whose financial and energy sectors are tightly intertwined with Russia’s — and has already approved visa restrictions and financial penalties on Moscow officials.

US officials have stressed that Putin himself is not on the sanctions list.

But Obama told Ukraine’s new prime minister Yatsenyuk after talks at the White House that Washington was willing to move much further if Putin failed to soften his stance immediately.