(Adds quote from EU commissioner)
By Paul Taylor
BRUSSELS, May 26 (Reuters) - Poland and Sweden proposed on Monday that the European Union build an Eastern Partnership to help former Soviet republics prepare for eventual membership by cooperating more closely with the EU and with each other.
A joint proposal submitted to EU foreign ministers did not mention the membership prospect, opposed by some west European states, but said: "An offer of more profound integration with the EU should be extended to all eastern partners."
It also called for "a permanent formula for multilateral cooperation" with ministerial and parliamentary meetings. EU External Affairs Commissioner Benita Ferrero-Waldner broadly welcomed the step but noted the time was "not ripe" to advance the membership hopes of a country such as Ukraine.
Polish Foreign Minister Radoslaw Sikorski said the long-term aim was to help Ukraine, Moldova, Georgia, Azerbaijan, Armenia and Belarus prepare themselves to join the EU, once western Europe has overcome its current bout of "enlargement fatigue".
Those states are already linked to Brussels through the European Neighbourhood Policy (ENP), which offers countries better trade access, economic assistance and visa liberalisation as they adapt to EU standards.
Sikorski compared the new initiative with creation of the Visegrad Group for cooperation in central Europe formed in the early 1990s by Poland, the Czech Republic, Slovakia and Hungary.
"You create a trademark of good behaviour, of working among yourselves. Thereby countries self-select themselves for membership of the EU," he told Brussels think-tank.
Swedish Foreign Minister Carl Bildt said the region was strategically crucial for Europe.
"It is time to look to the east and see what we can do to strengthen democracy, increase the European perspective and improve cooperation," he told reporters before a meeting to present the plan to EU counterparts.
"European perspective" is the term frequently used to refer to a country's long-term chances of winning EU membership.
Several ministers said the project was necessary to balance the EU's relations with its neighbours at a time when it is about to launch, at France's initiative, a Union for the Mediterranean to bolster its southern dimension.
"NO SIN"
"We need to balance. This year is Mediterranean year, next year is the year of the east," said Czech Deputy Prime Minister Alexandr Vondra, whose country will hold the EU's rotating chair in the first half of 2009.
French Foreign Minister Bernard Kouchner, backing the idea, told reporters: "It's no sin to go to the south and the east at the same time."
Ferrero-Waldner, who is responsible for the ENP in the European Commission, said the EU executive was generally supportive of any regional cooperation initiative.
"I am not against it at all," she told a news briefing. "However, it's essential that new initiatives build upon, complement and add value to existing frameworks."
She stressed too that while the European Commission had taken note of Ukraine's membership aspirations, the time was "not ripe to go a step further".
The new initiative would not involve Russia, the biggest eastern neighbour, with which the EU agreed on Monday to launch long-stalled negotiations for a strategic partnership agreement.
Sikorski made clear that unlike most Mediterranean states, the EU's eastern partners were mostly entitled to apply to join.
"To the south, we have neighbours of Europe. To the east, we have European neighbours -- countries such as Belarus, Ukraine and Moldova whose entire territory lies in Europe. By the provisions of the Treaty of Rome, all have the right to one day fulfil the criteria and perhaps become members," he said. (additional reporting by Mark John and David Brunnstrom; Writing by Paul Taylor; Editing by Matthew Jones)