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The Washingtons seem to have looked forward to these visits . Although joint US-Israeli studies on nuclear desalination dating back to 1964 had looked promising ( US Department of State memorandum , 14 December 1977 , unpublished ) , the " Proposal for Our Time " eventually faltered on economic grounds , along with the dangers of introducing nuclear technology to the region , but the effort was finally called off because of political resistance . Rebecca also points out another tension that might be looked at through the double lens of halakhah and aggadah . In some ways , it 's hard to get back to how the towns looked 100 years ago . For example , the nuclear blast effect could be fine-tuned without having to repeatedly recompile ( or even rerun ) the game : the programmer and artist just sat there and pulled on the slider bars until it looked just right .