Add Briceni District, Moldova

Improve Poland-Russia border

Improve Lithuania–Poland border

Add pre-2000 Yemen relation part 2

Improve Oman–Saudi Arabia border part 2

Improve Oman–Saudi Arabia border

Improve Oman–United Arab Emirates border

Improve Austria-Hungary border part 2

Improve Austria-Hungary border

Improve Belgium-Germany border part 2

Improve Belgium-Germany border

Improve Eritrea–Sudan border border

Add Saudi Arabian–Kuwaiti neutral zone part 3

Add Saudi Arabian–Kuwaiti neutral zone part 2 (clean up)

Add Saudi Arabian–Kuwaiti neutral zone part 1

Add Saudi Arabian–Kuwaiti neutral zone

Correct border with jordan (Hashemite Kingdom of Iraq)

fix Saudi Arabia start_date

fix Saudi Arabian–Iraqi neutral zone end_date

Improve Kuwait-Saudi Arabia border