Why is PM Modi embarking on a 20-hour train journey for seven-hour trip to Ukraine?

Prime Minister Narendra Modi is currently in the midst of his two-day state visit to Poland, becoming the first Indian leader to visit the Central European country in 45 years. After wrapping up his engagements in Poland, he will embark on another historic visit to Ukraine at the invitation of President Volodymyr Zelenskyy. It will be the first-ever visit by an Indian Prime Minister to Ukraine after establishing diplomatic ties in 1992.