Tim Lister

(CNN) — Syrian and Russian jets are stepping up strikes on opposition forces in northern Syria in retaliation for the sudden offensive that has cost the regime control of the country's second largest city, Aleppo.

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CNN — The reach and credibility of international law is at its lowest in years as governments dismiss arrest warrants in some of the most high-profile cases to come before the International Criminal Court.

We present the results of a fourth planetary defense exercise, focused this time on the small near-Earth asteroid (NEA) 2023 DZ2 and conducted during its close approach to the Earth in 2023 March. The International Asteroid Warning Network (IAWN), with support from NASA's Planetary Defense Coordination Office (PDCO), has been coordinating planetary defense observational campaigns since 2017 to test the operational readiness of the global planetary defense capabilities. The last campaign focused on the NEA Apophis, and an outcome of that exercise was the need for a short burst campaign to replicate a real-life near-Earth object impact hazard scenario. The goal of the 2023 DZ2 campaign was to characterize the small NEA as a potential impactor and exercise the planetary defense system including observations, hypothetical risk assessment and risk prediction, and hazard communication with a short notice of just 24 hr. The entire campaign lasted about 10 days. The campaign team was divided into several working groups based on the characterization method: photometry, spectroscopy, thermal IR photometry and optical polarimetry, radar, and risk assessment. Science results from the campaign show that 2023 DZ2 has a rotation period of 6.2745 ± 0.0030 minutes; visible wavelength color photometry/spectroscopy/polarimetry and near-IR spectroscopy all point to an E-type taxonomic classification with surface composition analogous to aubrite meteorites; and radar observations show that the object has a diameter of 30 ± 10 m, consistent with the high albedo (0.49) derived from polarimetric and thermal IR observations.

A crucial dam is at risk as fighting continued in several areas of northern Syria between Kurdish groups and Turkish-backed factions.

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(CNN) — More than a week after Bashar al-Assad fled Syria and his regime collapsed, hundreds of thousands of Syrians still have no answer to two questions that have haunted them for years, even decades.

More than a week after Bashar al-Assad fled Syria and his regime collapsed, hundreds of thousands of Syrians still have no answer to two questions that have haunted them for years, even decades.

(CNN) — A man who was filmed by CNN being released by rebels from a Damascus jail was a former intelligence officer with the deposed Syrian regime, according to local residents, and not an ordinary citizen who had been imprisoned, as he had claimed.

Jenin (CNN) — For more than a week, the sprawling Jenin refugee camp in the occupied West Bank has echoed to the sound of heavy gunfire – with masked snipers on roof tops and muffled explosions within its warren of alleyways.