Complex sentence: These claims are consistent with the pattern of strikes that night as described by NATO's official morning briefing the following day when a spokesman told journalists the focus of the night's strikes "was wholly on disrupting the national leadership" of the Yugoslav forces.
Split into simpler sentences: These claims are consistent with the pattern of strikes as described by NATO's official morning briefings at the time of the attack. At NATO's morning briefing the day after the attack, a spokesman told journalists the focus of the night's strikes "was wholly on disrupting the national leadership" of the Yugoslav forces.