31 May. According to Al Masdar, both US forces and the SDF attack "Syrian government ferries" carrying oil from the eastern banks across the Euphrates.
Also according to Al Masdar, a Turkish observation post came under cross-fire during fights between the SAA and "rebels" in northern Hama.
28 May. Around 50 activists disrupt the Berlin annual shareholder meeting of Germany's largest weapons manufacturer Rheinmetall and demand a stop of weapon exports to Turkey because of that country's attacks on Rojava. Among many other war machines, the company produces the Leopard II tank. Its' Italian subsidiary RWM Italia continued selling weapons to Saudi Arabia despite a German export ban to Saudi
26 May. The SAA has reversed the gains of the HTS counter-offensive, reinforced their troops and resumed the northern Hama operation.
22 May. A group of about 700 jihadists starts a counter-offensive in northern Hama and takes several places back from the SAA.
18 May. While the "European Song Contest" is going on in Tel Aviv, Israel attacks Syrian territory with drones and missiles for the second consecutive day.
10 May. Ziad Fadel summarizes the first couple of days of the SAA offensive in northern Hama.
7 May. 'A powerful strike' by the Russian aerospace forces and Syrian government forces on Idlib-based militants is reported, countering their reported preparations for an attack. north of Hama. From May 6, SAA conducts a military operation in north Hama; the settlements of Janabar, Al-Bana and Tel-Osman came under government forces control.
6 May. Russian airbase in Kmeimim was attacked twice with unguided rockets salvos from the area near Zavia settlement in Idlib, with fire correction by drones. It is reported that attacks were repelled with no casualties or damage, and that attackers positions were destroyed. There has been 12 earlier repelled attacks since early April, 8 of those with improvised drone munitions, other attacks with MLRS.