Complex sentence: On January 20 that year the Soviets announced that their oil specialists would be withdrawn in a 7-10 day period, with the Albanians later claiming that they had sabotaged Albania's oil installations before departing.
Split into simpler sentences: On January 20 that year the Soviets announced that their oil specialists would be withdrawn within a seven to ten day period. The Albanians later claimed that the specialists had sabotaged Albania's oil installations before departing.