A erstwhile nationalist information advisor has warned the imaginable deployment of UK troops to support bid successful Ukraine could past for "many years".
Lord Sedwill told the BBC's The Week successful Westminster that the UK would request to beryllium "willing to show strategical patience to springiness the Ukrainians the [security] assurances they need" successful the lawsuit of a bid deal.
Both the UK and France person said they would beryllium consenting to send troops to enactment to uphold immoderate ceasefire successful Russia's warfare with Ukraine.
They would signifier portion of a "coalition of the willing" to assistance Kyiv which the UK said could impact astir 20 different countries. Not each would needfully nonstop troops but could supply different support.
The plan, spearheaded by the UK and France, was acceptable retired astatine a acme hosted by the Prime Minister Sir Keir Starmer past weekend.
No accusation was provided connected which countries had shown an involvement successful offering enactment oregon what that enactment could specifically involve, but the radical is believed to dwell of European and Commonwealth countries.
Lord Sedwill said if Russia believed it could conscionable "wait america out" portion UK troops were deployed successful Ukraine, past immoderate effort to support a bid woody would not succeed.
"So we person to beryllium consenting to prolong specified an effort for perchance rather a agelong period, could beryllium galore years," helium added.
It comes arsenic concerns equine implicit US President Donald Trump's attack to the conflict, aft helium paused subject assistance to Ukraine, arsenic good arsenic quality sharing and entree to outer imagery successful an evident bid to bring Ukraine's President Zelensky to the negotiating table.
Russian officials person rejected the thought of peacekeeping troops successful Ukraine, with overseas curate Sergei Lavrov antecedently saying specified a determination "can't beryllium allowed" arsenic it would magnitude to the "direct, authoritative and unveiled engagement of Nato members successful the warfare against Russia".
On Friday, Russian MP and TV presenter Yevgeny Popov told BBC Newsnight that the imaginable of UK soldiers successful Ukraine was "unacceptable" and warned that "British troops volition beryllium nonstop targets for our missiles, you volition get coffins successful return".
In caller weeks, European leaders person committed to bolstering defence and summation subject spending.
At a acme successful Brussels connected Thursday, EU leaders backed plans to jointly get €150bn to lend to EU governments to boost subject capabilities.
Sir Keir welcomed the "historic" move arsenic "another motion of Europe stepping up".
A gathering acceptable to instrumentality spot successful Paris adjacent week would beryllium an "important infinitesimal to thrust guardant planning", Downing Street said.
The UK besides said it would enactment with French President Emmanuel Macron, alongside President Zelensky, to gully up a bid program to contiguous to Trump.
Lord Sedwill, who was furniture caput nether Theresa May and Boris Johnson, said it was a infinitesimal "for a reset" of Nato with European nations showing that they are "willing to measurement up and stock the burden".
He added that Nato "is successful beauteous bully health", peculiarly with the caller summation of Finland and Sweden, "two truly important subject powers".
Rose Gottemoeller, lawman caput wide of Nato during Trump's archetypal term, said she was "admiring" of Europe's caller effect successful supporting Kyiv.
"They are truly taking a batch of work for moving guardant successful their ain defence arsenic good arsenic the defence of Ukraine," she told BBC Radio 4's Today programme connected Saturday.
If Europe tin measurement up, Lord Sedwill added, "then we tin person the Americans that this remains an instauration which really helps support their information arsenic good arsenic European information and frankincense to stay invested successful it".
Former Conservative defence caput Ben Wallace said that it would not beryllium "the extremity of the world" if the US pulled retired of Nato and that Europe should beryllium looking astatine however it tin regenerate outer imagery and different exertion pulled from Ukraine by the US.
"We person the volition successful Europe and the wealth if we take to hole our ain information and defence," helium told the Today programme.
Many Western leaders person said that it would lone beryllium imaginable to uphold a lasting bid successful Ukraine with the assistance of the US.
Sir Keir antecedently said that a program for defence should beryllium made "in conjunction with the United States... it's that quality to enactment with the United States and our European partners that has kept the bid for 80 years now".
Trump has truthful acold avoided committing to specified support, and has suggested that the beingness of US workers successful Ukraine arsenic portion of a potential minerals deal could enactment arsenic a information guarantee.