The non-aggression pact was created so that would not declare war on each other.

I believe the answer is so that Germany and the Soviet Union would not declare war on each other. I hope this helps!

the lachish letters were written by hoshaiah, a military officer stationed possibly in mareshah,   and sent to yaush, possibly the commanding officer at lachish.

the series of letters were written in carbon ink in ancient hebrew on clay ostraca, shortly before lachish fell to the babylonian army of king nebuchadnezzar in 588/6 bc during the reign of zedekiah, king of judah.