When praying for this nation, I like to look for precedents in the Scripture. Here is a good example of various situations in biblical cross-references: (https://biblehub.com/2_kings/19-35.htm)
There is nothing to prevent a nation from invading another nation in today’s world. The fear of retaliation with stronger weapons of destruction or simply a greater population of available soldiers has previously been a deterrent to open conflict. But the untamed God is a God of power and indignation at aggression with violence and bloodshed, and He is vitally interested in the affairs of men.
Think about the situation when the Assyrian army had surrounded Jerusalem and the Jews were starving within the walls of their city. The Angel of the Lord came and slew the enemy army. The next morning the Jews were thrilled to plunder the enemy army for food and other necessities (II Kings 19:35; Isaiah 37:36). Think about God’s intervention for Israel in the Six Day War in 1967. God still works in behalf of His praying people, so let’s be motivated to pray earnestly for the survival of our own nation against our enemies. God is certainly able if we are willing to inconvenience ourselves in fasting and intercession. That will involve repentance and confession of our own sins first.
II Chronicles 7:14 if my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land.
Let us not deceive ourselves: we certainly have need to repent of our own wickedness before we ask God to defend us against our enemies!! For example, yesterday in the grocery store, the clerk that waited on me boldly wore a rainbow mask. Sexual perversion. Do we not need to repent of our sins before asking almighty God to defend us from aggressors?
But Moses told the people, “Do not be afraid. Stand firm and you will see the Lord’s salvation, which He will accomplish for you today; for the Egyptians you see today, you will never see again.
2 Chronicles 15:2
So he went out to meet Asa and said to him, “Listen to me, Asa and all Judah and Benjamin. The LORD is with you when you are with Him. If you seek Him, He will be found by you, but if you forsake Him, He will forsake you.
2 Chronicles 20:6-17
…16Tomorrow you are to march down against them. You will see them coming up the Ascent of Ziz, and you will find them at the end of the valley facing the Wilderness of Jeruel. 17You need not fight this battle. Take up your positions, stand firm, and see the salvation of the LORD on your behalf, O Judah and Jerusalem. Do not be afraid or discouraged. Go out and face them tomorrow, for the LORD is with you.’ ”18Then Jehoshaphat bowed face down, and all the people of Judah and Jerusalem fell down before the LORD to worship Him.…
2 Chronicles 32:8
With him is only an arm of flesh, but with us is the LORD our God to help us and to fight our battles.” So the people were strengthened by the words of Hezekiah king of Judah.
The Old Testament Scriptures tell the stories of various battles in which God delivered the Israelites in different ways that only He was capable of. The nation of Israel was allowed to stand and see the battles won by their Lord, and not by the hand of man. Having God to fight for them was amazing. And while the whole nation was not pure, enough were faithful to their Creator-God that He jealously set the heavenly armies against Israel’s earthly foes.
So it is today. If we, the Lord’s, will turn from our wicked ways, honor and obey Him, we will see His miraculous deliverance from our many enemies. A superficial turning, superficial repentance, superficial obedience will not impress the all-knowing God. But a wholehearted, deep commitment will move Him in our behalf.