Lord Ellpus - the aid sent to Stalin over the Pacific route dwarfs "lend-lease"; e.g. 9 out of 10 trucks in the Russian army were in fact ours and so was the gasoline powering them. That assistance would have stopped long before Russians got anywhere near the Atlantic.
Since there's no reason for you to have read Washington's farewell address, earlier quoted by Whooda, I'm posting another excerpt:
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"So likewise, a passionate attachment of one nation for another produces a variety of evils. Sympathy for the favorite nation, facilitating the illusion of an imaginary common interest in cases where no real common interest exists, and infusing into one the enmities of the other, betrays the former into a participation in the quarrels and wars of the latter without adequate inducement or justification. It leads also to concessions to the favorite nation of privileges denied to others which is apt doubly to injure the nation making the concessions; by unnecessarily parting with what ought to have been retained, and by exciting jealousy, ill-will, and a disposition to retaliate, in the parties from whom equal privileges are withheld. And it gives to ambitious, corrupted, or deluded citizens (who devote themselves to the favorite nation),
facility to betray or sacrifice the interests of their own country, without odium, sometimes even with popularity; gilding, with the appearances of a virtuous sense of obligation, a commendable deference for public opinion, or a laudable zeal for public good, the base or foolish compliances of ambition, corruption, or infatuation. "
http://www.yale.edu/lawweb/avalon/washing.htm
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In the interest of full disclosure I support GeorgeOB grandfather's vote against "lend-lease", first in the spirit of Washington, second because I think it was monstrous to tar the German Navy with the allegation that the Lusitania was a "passenger" ship - any ship carrying guns and ammunition to a war zone is by definition a warship.
Churchill was first lord of the Admiralty at the time, so he must have known the nature of her cargo; don't bother refuting this, btw, since the ship has been located in the Irish Sea and her contents inventoried