This is Lasker's position. The Black Rook is not as well positioned as in Philidor's position and White threatens 2. Ra8+ Kf7 3. e6+ Kf6 4. Rf8+ Kg7 5. e7.
1...Re1
2.Ke6
Kf8
in accordance with the principle of the King going to the short side so the Rook can defend with checks from the long side.
3.Ra8+
Kg7
4.Re8
Ra1
5.Rd8
Re1
6.Re8
Ra1
draws *