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- US President Joe Biden at the G7 pledged a decade of security support for Ukraine.
- He said the US was not "backing down" in helping Ukraine fight Russia.
- But the promise may be worth less than it appears.
At the G7 summit in Italy on Thursday, Ukraine's President Volodymyr Zelenskyy hailed a "historic" new 10-year security deal signed with US President Joe Biden.
Under the deal, the US will work with Ukraine for the next decade to boost its military capabilities, its defense industrial base, its economy, and its energy infrastructure.