(Bloomberg) -- The UK has struck the “strongest possible agreement” on immigration with Rwanda, Rishi Sunak’s spokesman, Max Blain, said as the prime minister seeks to force his controversial plan to fly asylum seekers to the east African nation past the UK courts.Most Read from BloombergHow Suspects Laundered Billions in Singapore for YearsMoody’s Cuts China Credit Outlook to Negative on Rising DebtStocks Slip as Traders Push Back on Rate Optimism: Markets WrapHarvard Alumni Rebuke Its Israel R