Is it Permissible to Eat Meat During the Three Weeks?

Greetings,

It is permitted to eat meat until Rosh Chodesh Av, including Rosh Chodesh Av. However, after Rosh Chodesh Av until the 10th of Av, including the 10th of Av, it is prohibited to eat meat during these days.

Most Ashkenazi communities refrain from eating meat even on Rosh Chodesh itself.

Best regards,
Menashe Ben Porat