impressed by how many tit-for-tat retaliatory responses the filmmakers allow before pulling the plug on the conspirators and averting an american-russian armageddon 
(ROOT (VP (VBN impressed) (PP (IN by) (SBAR (WHNP (WHADJP (WRB how) (JJ many)) (NML (NML (NN tit)) (HYPH -) (PP (IN for) (HYPH -) (NP (NN tat)))) (JJ retaliatory) (NNS responses)) (S (NP (DT the) (NNS filmmakers)) (VP (VBP allow) (PP (IN before) (S (VP (VP (VBG pulling) (NP (DT the) (NN plug)) (PP (IN on) (NP (DT the) (NNS conspirators)))) (CC and) (VP (VBG averting) (NP (DT an) (ADJP (JJ american) (HYPH -) (JJ russian)) (NN armageddon))))))))))))
(ROOT (VP (VBN ) (PP (IN ) (SBAR (WHNP (WHADJP (WRB ) (JJ )) (NML (NML (NN )) (HYPH ) (PP (IN ) (HYPH ) (NP (NN )))) (JJ ) (NNS )) (S (NP (DT ) (NNS )) (VP (VBP ) (PP (IN ) (S (VP (VP (VBG ) (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NNS )))) (CC ) (VP (VBG ) (NP (DT ) (ADJP (JJ ) (HYPH ) (JJ )) (NN ))))))))))))