It was a stratic mistake to leave Ethiopian border undefended

Trusting Sudan would not invade Ethiopia territory,  PM Abiy moved Ethiopian army from border area.  That was a strategic mistake. Sudan and other Arab countries will never be friends to Ethiopia, instead they wait for opportunities to attack it. That is what the recent invasion of Ethiopian territories by Sudan militia  shows. That is what history teach us. PM Abiy should stop his naivety and correct hist mistakes. Only strength and unity