Emmanuel Macron addressing parliament in the Palace of Westminster's Royal Gallery was a highly anticipated moment in the long history of our two nations.
That story - the conflict and a historic Anglo-French agreement that ended centuries of feuding, the Entente Cordiale - adorn the walls of this great hall.
Looming over the hundreds of MPs and peers who had gathered in the heat to hear the French president speak, hang two monumental paintings depicting British victories in the Napoleonic wars, while the glass stand in the room commemorates the 408 Lords who lost their lives fighting for Europe in two world wars.
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The French president came to parliament as the first European leader to be honoured with a state visit since Brexit.
It was the first address of a French president to parliament since 2008, and Mr Macron used it to mark what he called a new era in Anglo-Franco relations.
Peers and MPs cheered with delight when he confirmed France would loan the Bayeux Tapestry to the UK in the run-up to the anniversary of William the Conqueror's birthday.
"I have to say, it took properly more years to deliver that project than all the Brexit texts," he joked as former prime minister Theresa May watched on from the front row
From Brexit to migration, European security, to a two-state solution and the recognition of Palestine, Mr Macron did not shy away from thorny issues, as he turned the page on Brexit tensions woven through Anglo-French relations in recent years, in what one peer described to me as a "very political speech rather than just the usual warm words".
He also used this address to praise Sir Keir Starmer, sitting in the audience, for his leadership on security and Ukraine, and his commitment to the international order and alliances forged from the ashes of the Second World War. For that, he received a loud ovation from the gathered parliamentarians.
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The test now for Sir Keir is whether he can turn his deft diplomatic work in recent months with Mr Macron into concrete action to give him a much-needed win on the domestic front, particularly after his torrid week on welfare.
The government hopes that France's aim for "cooperation and tangible results" at the upcoming political summit as part of this state visit, will give Starmer a much-needed boost.
The PM is attempting to drive-down crossings by negotiating a one-in one-out return treaty with France.
Under this plan, those crossing the Channel illegally will be sent back to France in exchange for Britain taking in an asylum seeker with a family connection in the UK.
But as I understand it, the deal is still in the balance, with some EU countries unhappy about France and the UK agreeing on a bilateral deal.
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