I have had closer interactions with President Putin than with any other foreign colleagues. He is my best and bosom friend. I cherish dearly our deep friendship.
Xi Jinping, Business Insider
- Intrusive rock (Wikipedia)
Intrusive rock is formed when magma penetrates existing rock, crystallizes, and solidifies underground to form intrusions, such as batholiths, dikes, sills, laccoliths, and volcanic necks.