Eisenhower wanted progress on bringing the Cold War to a conclusion. Khrushchev wanted peaceful coexistence. A thaw was appearing and the summit aimed to capitalise.
Tensions were higher than they had been for some time. Khrushchev was very critical of the Eisenhower but Eisenhower merely chose to 'suspend' the flights.
It could be argued so. Khrushchev could have capitalised on the U2 crisis because he knew the USSR was more advanced in terms of the arms and space race.
